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United States Patent | 5,591,927 |
Kawamura ,   et al. | January 7, 1997 |
A keyboard musical instrument allowing a player to perform using acoustic tones or electronic sounds is provided. The keyboard is movable between various positions, such as between a raised and a lowered position. In an electronic sound mode, the keyboard is lowered so as to increase a gap between hammer assemblies and associated strings. The keyboard is lowered using cams or lifters to pull down the keyboard so as to increase a gap between hammer assemblies and associated strings. In this mode, each hammer assembly rebounds on a stopper when a corresponding key is selected, thereby giving a desirable piano touch.
Inventors: | Kawamura; Kiyoshi (Shizuoka-ken, JP); Muramatsu; Taroh (Shizuoka-ken, JP); Wada; Masahiro (Shizuoka-ken, JP); Sugiyama; Nobuo (Shizuoka-ken, JP); Koseki; Shinya (Shizuoka-ken, JP) |
Assignee: | Yamaha Corporation (JP) |
Appl. No.: | 140617 |
Filed: | October 22, 1993 |
Current U.S. Class: | 84/171; 108/20 |
Intern'l Class: | G10D 015/00 |
Field of Search: | 84/216,219,220,224,225,171,615,33,34,35,36 108/20 |
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